愚兄
ぐ
け
い
Meanings
1
my older brother
Humble term used to refer to one's own older brother when speaking to someone outside the family. The kanji 愚 (foolish) is a self-deprecating prefix common in humble language.
My older brother returned from abroad the other day.
My older brother currently lives in Osaka.
2
foolish older brother
Literal meaning based on the kanji, but rarely used as a standalone insult. More often encountered as a self-deprecating humble reference (sense 1) or in literary contexts.
He lamented that the family business had declined because of his foolish older brother.